<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>pg_amproc</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REV="MADE"
HREF="mailto:pgsql-docs@postgresql.org"><LINK
REL="HOME"
TITLE="PostgreSQL 9.1.2 Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="System Catalogs"
HREF="catalogs.html"><LINK
REL="PREVIOUS"
TITLE="pg_amop"
HREF="catalog-pg-amop.html"><LINK
REL="NEXT"
TITLE="pg_attrdef"
HREF="catalog-pg-attrdef.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="stylesheet.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=ISO-8859-1"><META
NAME="creation"
CONTENT="2011-12-01T22:07:59"></HEAD
><BODY
CLASS="SECT1"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="5"
ALIGN="center"
VALIGN="bottom"
><A
HREF="index.html"
>PostgreSQL 9.1.2 Documentation</A
></TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
TITLE="pg_amop"
HREF="catalog-pg-amop.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
HREF="catalogs.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="60%"
ALIGN="center"
VALIGN="bottom"
>Chapter 45. System Catalogs</TD
><TD
WIDTH="20%"
ALIGN="right"
VALIGN="top"
><A
TITLE="pg_attrdef"
HREF="catalog-pg-attrdef.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="CATALOG-PG-AMPROC"
>45.5. <TT
CLASS="STRUCTNAME"
>pg_amproc</TT
></A
></H1
><P
>   The catalog <TT
CLASS="STRUCTNAME"
>pg_amproc</TT
> stores information about
   support procedures associated with access method operator families.  There
   is one row for each support procedure belonging to an operator family.
  </P
><DIV
CLASS="TABLE"
><A
NAME="AEN84891"
></A
><P
><B
>Table 45-5. <TT
CLASS="STRUCTNAME"
>pg_amproc</TT
> Columns</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Type</TH
><TH
>References</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>amprocfamily</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-opfamily.html"
><TT
CLASS="STRUCTNAME"
>pg_opfamily</TT
></A
>.oid</TT
></TD
><TD
>The operator family this entry is for</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>amproclefttype</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-type.html"
><TT
CLASS="STRUCTNAME"
>pg_type</TT
></A
>.oid</TT
></TD
><TD
>Left-hand input data type of associated operator</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>amprocrighttype</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-type.html"
><TT
CLASS="STRUCTNAME"
>pg_type</TT
></A
>.oid</TT
></TD
><TD
>Right-hand input data type of associated operator</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>amprocnum</TT
></TD
><TD
><TT
CLASS="TYPE"
>int2</TT
></TD
><TD
>&nbsp;</TD
><TD
>Support procedure number</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>amproc</TT
></TD
><TD
><TT
CLASS="TYPE"
>regproc</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-proc.html"
><TT
CLASS="STRUCTNAME"
>pg_proc</TT
></A
>.oid</TT
></TD
><TD
>OID of the procedure</TD
></TR
></TBODY
></TABLE
></DIV
><P
>   The usual interpretation of the
   <TT
CLASS="STRUCTFIELD"
>amproclefttype</TT
> and <TT
CLASS="STRUCTFIELD"
>amprocrighttype</TT
> fields
   is that they identify the left and right input types of the operator(s)
   that a particular support procedure supports.  For some access methods
   these match the input data type(s) of the support procedure itself, for
   others not.  There is a notion of <SPAN
CLASS="QUOTE"
>"default"</SPAN
> support procedures for
   an index, which are those with <TT
CLASS="STRUCTFIELD"
>amproclefttype</TT
> and
   <TT
CLASS="STRUCTFIELD"
>amprocrighttype</TT
> both equal to the index opclass's
   <TT
CLASS="STRUCTFIELD"
>opcintype</TT
>.
  </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="catalog-pg-amop.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="catalog-pg-attrdef.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><TT
CLASS="STRUCTNAME"
>pg_amop</TT
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="catalogs.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><TT
CLASS="STRUCTNAME"
>pg_attrdef</TT
></TD
></TR
></TABLE
></DIV
></BODY
></HTML
>